Sewing machine cutting-attachment



May 31, 1932. 2. ROUTTENBERG 1,861,068

SEWING MACHINE CUTTING ATTACHMENT 7 Filed Jan. 20. l930 21. xii-- .L A://14 l 4 l :E, n 251 ZACH/i PIA flour-rams any,

INVENTOE;

Patented May 31, 1932 "ZACHARIA 'ROUTTENBERG, OF LOS ANGELES, CALIFORNIASEWING MACHINE CUTTING-ATTACHMENT Application, filed January 20, 1930.Serial No. 422,049.,

This invention relates to devices used for cutting theedge of cloth andthe like material handled underthe sewing machine to result in a cleancut parallel to the stitching pro- ,ducedby the sewing'm'achi'ne. a

' One ofthe objects of this invention is to provide an attachmentdesigned to be applicable to any common sewing machine whereby such. ajsewing machine is transformed into a combination cutting. and sewingmachine.

Another object is to provide means whereby the cutting mechanism isautomatically held in inoperative position when not used. Another object=-is to provide operating means to be made use of at will of the operator to either interengage the cutting and sewing mechanisms for acombined cutting and sewing, operation or to disengage the mechanisms toleave the cutting mechanism in inoperative position while the sewing 7 vI v a different sewing lma'chlnes' mayr be ofd1fi'ermechanism is in acondition to operate in the normal manner of such mechanisms of anycommon sewing machine. 7

Other objects will appear from the following description and appendedclaims as well as from the accompanying drawings, in which- I 1 Fig. 1is a fragmentary side elevation of the head portion of the free end ofthe arm of a sewing'machine in general outlines having inserted thereina bar with cutting blade to cooperate withthe. other mechanismsgenerally found and provided in sucha'head, a needle-bar with needle"and a presser-bar with resser-foot being also roughly outlined in theircooperative positions in relation to the cutting mechanism of this newattachment. Fig. 2 is asection on liner22 of Fig. 1 through theneedle-bar and through the cuttor-bar illustrating an engaging pin andknob in inoperative position and in top plan view. F ig. '3 isa-fragmentary front elevation of cutter-bar. v Fig. 4 is a horizontalsection similar tothe oneillustrated in Fig. 2, illustrating a slightlymodified form of engagement.

While combination cutting and sewing 'machines are known, the principalfeature with the presser-foot 7. V v a A cutter-blade 8 is provided onthis new the cutting blade attached to the end of the of this inventionis to provide attachment by which any common sewing machine can betransformed into such a combination cuttingand sewingmachine, at thesame time leaving the sewing machine in a condition that it can still beused'as such with the cutting mechanism in inoperative position.

Any sewing machine is commonly provided with a needle bar as indicatedat 4 with a needle; 5 attached to the'lower endrfi A presser-bar 6 is povided at its lower end attachment in suchamanner as to become disposedsidewise of the presser-foot 7 The cutter-blade 8 is attached to.thelower end of thecutter-bar 9, which is shiftably mounted on the'head10 on the frontf endof the arm of a, sewing machine, not shown in the knv ir i Z- L'lhe 'head on-thefreeend of theilairm of ent shapes anddesigns, and the outline used in the drawingstogether with-the manner orI parts disclosed for holding the 'cutter-ba rto 'the head musttherefore not be considered final or exclusive sincefor'th'e' abovereason suchparts must varyon difierent sewing chines especially so since1 this new attachment is to be.v used as an additional; mechanisnito beapplied to any alreadyexisting sewing machine.

' The form of the cutter-bar too, therefore,

must be different for theiattachments'gf'or different sewing-machines.{As illustrated, in the drawings the cutter-bar 9 is bent in its lowerportionasindicated at .13, to bring the attachedcutterblade 8 into themostdesirable position'in relation to the needle to the presser-foo't,however, for the above reasons} the bending 1 'orforining ofth'e bar 9must depend on ex- 7 isting conditions in sewing machines; T -The" upperend 14- of the cutter bari'is bent,

*andia spring 'l5 is inserted between this bent end 14 and the top ofthe head 10 .ofthe arm.

* of the sewing machine, to holdthe cutter-bar with the cutting blade ininoperative position; and adapted to yield for the downwargd 1 @uttifigm v men s w en thers lttingeiteqb- 99 ment is operatively interconnectedwith the sewing mechanism.

A catch or engagement is illustrated in Fig. 2 in detail, partly alsodistinguishable 5 in Fi 1. The support or member 16 is shifta ly andturnably mounted in the crosshead 17 a spring 18 being provided on theback Gm one-Head whereby the member 16 is normally pressed in thedirection of the arrow 19. The member 16 is provided with anengaging-pint; which outer or front face of the cross-head 17 when ininoperative position izn which the whole en gement is illustrated inFigs. 1 and 2, w ile this pin c'an be made topass intQ-thehole 91in thecross-head 17 and into .ZQI the cutter-liar 91in engaging Toibni' theggggement into inoperative a "tiong e. r 16 .is simply, graspedo'b'23amd drawn against the tens ennf the :spring 18 until the pin 20 iswith- Bmzn'i'mm the slot 22 and ole 21,, when the Q, 1 ment may simplybe turned nifiherlto the tor to the right until the free ?il in '21comes to abut against the acebr I11 materialof the cross-head 17, inwhich the engagement will remain tensionofthe spring 18.

itively short .mevement issuflicient for vthe 1pelration while theneedle-bar4 is to move comparatively ,far

5' 550m and .3 .ing machine for its proper operation.

The cuss-head .17 is-secured to the needle- I convenient manner, aSet-screw .indicatndin the drawings 'hut various .oflmrwiaiems maybemused iplr this pur- 1m n princip y on t e construcflmgnf-the erent orsuitable parts of the muS-wmngmaohmes.

A mofifiediorm of-engagement .is i a in" Fig. 4.. The block 25 issestand in themss-head ll'ltby the screw 26. .mins'z lie .shiftahlewithin the block 25 under the tension of theis ring .28, having *129-31430 by which the pin .canbe lmldinitl adjusted positions, for,

In either interengagingithe cutter .and needle has, a! intemupting auchengagement so that scan move independently (If the m has. Thelocking-pin 31 under itheiten- Giomdthe W32 serves .toiholdthe pin:27

ll v ed positions by means of MMQ9-HKl-30, Y

(hm described my invention, 1

alfllachmentyin combination u wflefibmmil I ramd'the' hesd of thezamd-wltfing machine, acntterlbar shiftahly m an said' head mith its lowercutting 5D in' v lelafii'on to the lower end of mndede-baqmeansfox-normally hold-V .5 'ifig'ihc cmer-bar 'hi it's uppermost inoperaslot22 is provided since a comparaow the needle-plate ofthe sew tiveposition, a cross-head adjustably mounted on the said needle-barextending sidewise to the cutter-bar and having an aperture, thecutter-bar having a slot in alignment with said aperture, and anengagement shiftably and turnably mounted on said cross-head having apingortion adapted to extend through the ca 'apttln a andasldt to;operatively engaging the said needle-bar with said cutter-bar andincluding a tension means for m the gement against the cross-head inengaging position as well "as in inupurfliwe posltion.

2. In a cuttin attachment, in combination of a sewing machine, operatingmeans-extending from the needle-bar in a sidewise direction andincluding anengaging member, and Ya cutter bar hawing a slot to-.slidingl receive the said aging member and adhpted .tobe'operate giythe needle-bar whens'a'ide 5p= 1 member comes into contact with an end wl ofsaid slot.

In testimony that I claim the foregoing as ti l

